Get your taxes done using TurboTax

Ok, great and thank you. Is there any benefit/penalty to paying/not paying an estimated tax payment in advance? If there is likely to be a penalty for not paying in advance (I'm in Arizona and all business was conducted here), I will make those payments asap. If there won't be a penalty, I'd rather not go through the exercise to estimate. I figure I'm going to owe some taxes either way.